Specification of Joseph Francis Pratt : instruments for relieving deafness.

  • Pratt, Joseph Francis.
Date:
1861
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Credit

Specification of Joseph Francis Pratt : instruments for relieving deafness. Public Domain Mark. Source: Wellcome Collection.

About this work

Description

Patent for "improvements in instruments for receiving and transmitting sound, particularly adapted to the relief of deafness".

Publication/Creation

London : Great Seal Patent Office, 1861 (London : George E. Eyre and William Spottiswoode)

Physical description

2 pages ; 28 cm

Contributors

Notes

Cover title.
At head of title: A.D. 1860, 6th December. No. 2990.
"Joseph Francis Pratt, of Oxford Street, in the county of Middlesex, surgical instrument maker".

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Where to find it

  • LocationStatusAccess
    Closed stores
    Pat. vol. 28
  • Location Access
    Closed stores
    Pat. vol. 28:19

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